Muhammad, thanks very much. We turn to the crash of the u.P.S. Cargo plane in alabama. Federal investigators are back on the scene trying to retrieve the all-important black boxes, hoping to figure out why the plane crashed just short of the runway. David kerley is in birmingham with the latest. Good morning, david. Reporter: Good morning. There is some of the damaged wreckage here in birmingham, under the lights, as the sun is just starting to come up. The ntsb was on the scene here within hours. But some of the wreckage was too hot to probe. This morning, these investigators will be poring over this wreckage, trying to figure out why this huge cargo jet crashed short of the runway. Even 12 hours after that crash, the tail section was still smoldering. Investigators unable to retrieve the black boxes. But within hours today, they should have those boxes, which may explain why the u.P.S. Wide-body a-300 was low on its approach. So low that the massive plane ripped the tops off trees a quarter-mile from the runway. There was no emergency declared from the cockpit before the jet slams into the bottom of a hill just short of the runway. Fireball where there's evidence of fire. Then, it went up the hill, where it came to the top of the hill and came to its final resting point. Reporter: Came to rest in several locations. The nose, mostly intact. The center of the plane, with the wing still attached, another 75 yards away. With the asiana 777 crashing short of the runway in san francisco, and now this u.P.S. Aircraft also coming up short, safety experts are becoming concerned. Since 2002, half of all deadly crashes have come during the landing phase. This break in the incredible safety record the last number of years is really upsetting. Even those these are landing accidents, they're not necessarily from the same cause. Reporter: For neighbors whose trees were shredded and parts of the plane came raining down on their yard, this was a frightening close call. The bensons' yard is littered with debris. U.P.S. Has not identified the pilots that died in the crash. Once the black boxes are recovered, they'll be taken to washington, d.C. We should have answers fairly soon.

This transcript has been automatically generated and may not be 100% accurate.

{"id":19966465,"title":"UPS Plane Crashed Short of Runway, 2 Killed","duration":"2:09","description":"NTSB investigators are working to find out what caused the cargo jet to crash.","url":"/GMA/video/ups-plane-crash-birmingham-alabama-plane-crashed-short-19966465","section":"GMA","mediaType":"default"}